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June 2, 193 1. M. G. 'WERME GRATING AND FRAIJIE THEREFOR I Filed Au 4, 1950 I erzri Welch r .Ysrm

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Patented June 2, 1931 UNITED STATES .PATE

MELCHER G. WERME, or WORCESTER, MASSACHUSETTS, ASSIGNOR To wroxwmn SPENCER STEEL COMPANY, OF NEW YORK, N. Y'., A CORPORATION OEDELAWABE GBATING AND FRAME THEREFOR Application filed August 4,1930. Serial No. 472,870. 7

This invention relates to a grating or grill of the type commonly used in covering a wall opening such as a ventilating duct.

It is the object of my invention to provide 5 a construction by which I am enabled to form gratings of perforated metal from stock size sheets or rolls, while at the Same time a pleasing and finished appearance is presented.

A further object of the invention is to provide an improved means for attaching an enclosing frame or border to the perforated metal sheet or grating, and particularly for providing a frame which may be conveniently adapted to difierent size gratings.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a front view of my improved grating and frame;

Fig. 2 is an enlarged detail view of one corner of the grating and frame, with the parts shown in spaced relation;

Fig. 3 is a rear view of one corner of the grating and frame;

Figs. 4 and 5 are sectional plan views, taken along the lines 4-4 and 55 in Figs. 3 and 2 respectively;

Fig. 6 is a rear perspective view of one end of a frame member; and

Fig. 7 is a detail front elevation showing a slight modification.

Referring to the drawings, I have shown a grating 10 which is formed of perforated metal and which may be of any usual or preferred design. This perforated metal is preferably formed in large commercial sheets or rolls, from which sections may be cut to conform to the required size of. an opening.

Such a grating, cut from large sheets or rolls, would show an unfinished and irregular edge. In order to provide a pleasing and finished appearance, I make use of frame members 12 and corner pieces 14.

A flange 15 is for-med on each frame member 12 by bending the edge of the frame member rearward and then laterally under the face portion, as clearly shown in Figs, 4 and,

6. The endportionsof the framermembers I assembled relation.

Tongues 20 are punched. rearward from the end portions of the frame members 12 and these tongues 20 are bent overlthe ribs of the grating 10 when the parts are assembled, as indicated in Figsj3 and 4, and firmly secure the frame members 12 in assembled relation.

It will be understood that the stock for the members 12 is formed in long strips, from which pieces of any desired length to form a frame of a given size may be easily cut. The tongues 20 may be punched in any desired relation to the cut ends of the members 12.

I thus provide a frame or binding which encloses the irregular edges of the perforated metal grating and these frame members provide a finished border of a desired width entirely around the grating.

In order to conceal the joints between the frame members 12, I provide corner pieces 14 mental appearance, as indicated'in section in Fig. 5. These corner pieces are provided with flanges 30 along the two outer edges and holes 31 are also provided to receive fastensecured in position.

These fastening devices may be rivets 32, as shown in Fig. 4, or screws 33, as shown in Fig. 7. Where'rivets are used, they secure bers 12 and all of these parts are permanently secured to the grating 10. When the screws 33 are used, they preferably extend through holes in the frame members 12 and into the wall or casing to which the grating is to be attached.

The corner pieces 14 are adapted for use on gratings of any desired size and, as previously stated, the frame members 12 may be cut to any desired length to suit a particular grating. I have thus provided a simple and economical construction by which a grating and frame of any desired size may be very easily constructed from stock materials.

Havin thus described, my QYGHfiQQ am which may be stamped to provide an ornaing devices by which the corner pieces may be d the corner pieces 14 firmly to the frame memthe advantages thereof, I do not Wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is 1. A grating comprising a body of perforated metal of substantial thickness, and an enclosing frame formed of a plurality of strips of sheet metal recessed to receive the edges of said perforated body, each strip having portions thereof partially severed therefrom and projected rearward and bent to embrace portions of said perforated body, thereby securing said strips in position.

2. The combination in agrating as set forth in claim 1, in which corner pieces are provided which overlie the ends of said frame strips and enclose edge portions thereof, and in which means are provided to secure said corner pieces in assembled relation with said perforated body and said frame strips.

In testimony whereof I have hereunto affixed my signature. 7

MELCHER G. VVERME. 

